Logo Search packages:      
Sourcecode: easystroke version File versions  Download package

fire.cc

/*
 * Copyright (c) 2008, Thomas Jaeger <ThJaeger@gmail.com>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include "fire.h"
#include <X11/Xutil.h>
#include <math.h>

Fire::Fire() {
      const char *ofc = "org.freedesktop.compiz";
      GError *error = 0;
      bus = dbus_g_bus_get(DBUS_BUS_SESSION, &error);
      if (!bus) {
            g_error_free(error);
            throw DBusException();
      }
      point_proxy = dbus_g_proxy_new_for_name(bus, ofc, "/org/freedesktop/compiz/firepaint/allscreens/add_particle", ofc);
      clear_proxy = dbus_g_proxy_new_for_name(bus, ofc, "/org/freedesktop/compiz/firepaint/allscreens/clear_key", ofc);
}

void Fire::add_point(float x, float y) {
      dbus_g_proxy_call_no_reply(point_proxy, "activate",
                  G_TYPE_STRING, "root", G_TYPE_INT,    gint(ROOT),
                  G_TYPE_STRING, "x",   G_TYPE_DOUBLE, gdouble(x),
                  G_TYPE_STRING, "y",   G_TYPE_DOUBLE, gdouble(y),
                  G_TYPE_INVALID);
}

void Fire::draw(Point p, Point q) {
      float dist = hypot(p.x-q.x, p.y-q.y);
      leftover -= dist;
      while (leftover < 0.01) {
            add_point(q.x + (q.x-p.x)*leftover/dist, q.y + (q.y-p.y)*leftover/dist);
            leftover += 5.0;
      }
}
void Fire::timeout() {
      dbus_g_proxy_call_no_reply(clear_proxy, "activate", 
                  G_TYPE_STRING, "root", G_TYPE_INT,    gint(ROOT),
                  G_TYPE_INVALID);
}

Generated by  Doxygen 1.6.0   Back to index